Great Circle Associates Firewalls
(August 1997)
 

Indexed By Date: [Previous] [Next] Indexed By Thread: [Previous] [Next]

Subject: Re: SNMP, SunNET Manager and security
From: Konstantin Agouros <Konstantin_Agouros @ genua . de>
Date: Fri, 1 Aug 1997 09:38:15 +0200 (CEST)
To: dave @ nic . com (Dave Wreski)
Cc: firewalls @ GreatCircle . COM
In-reply-to: <Pine . GSO . 3 . 95q . 970731192840 . 4388D-100000 @ nic . com> from "Dave Wreski" at "Jul 31, 97 07:32:05 pm"

> 
> 
> Hi all.  I'm interested in using SunNET SNMP on a few of the machines in
> my DMZ.  I'm wondering the security implications of using this in my DMZ,
> protected at both ends by FW-1.
> 
> Services such as SMTP and DNS come in from the Internet thru our external
> firewall.
> 
> I'm not really too familiar with Sun's SNMP, but I understand that SNMP
> generally is insecure, correct?  Is it suicide to even think about putting
> SNMP between the firewall's, in our DMZ?  If so, why?
SNMP uses the read and write community to determine, if you are allowed to
read/write values from/to Devices. These are transmitted in clear text.
So if someone breaks into your DMZ, gets access to one of the machines in a
level, that he/she can do a tcpdump (or something similar) they get to your
communities. If you want to use set-requests (e.g. to write a new config to
your router or something like that) than this is probably not what you want.

Konstantin
> 
> Thanks,
> Dave Wreski
> 
> 
> 


-- 
Dipl. Inf. Konstantin Agouros -     elwood @
 genua .
 de
GeNUA mbh, Raeterstr. 26,  85551 Kirchheim, Germany
Tel.: +49 89 99195019          Fax: +49 89 99195099
----------------------------------------------------
Most people say, "If it ain't broke, don't fix it.
For an engineer, if it ain't broke it doesn't have 
enough features." Scott Adams, The Dilbert Principle

Indexed By Date Previous: Re: DOS firewall?
From: mikech @ avana . net
Next: Re: Packets
From: Brian Mitchell <brian @ firehouse . net>
Indexed By Thread Previous: Re: DOS firewall?
From: mikech @ avana . net
Next: about architectural design
From: CYGAN Christophe <c . cygan @ olivetti . fr>

Google
 
Search Internet Search www.greatcircle.com